Nut-facing machine.



V. R. KOONTZ.

NUT FAGING MACHINE.

APPLxuATIoN FILED 0011.3, 1910.

Patented 0st. 20, 1914.

2 SHEETSn SHEET 1.

Ill L Wmme/o V. B. KOONTZ.

NUT FAGING MACHINE.

APPLICATION FILED 00123. 1910.

Patented 0@1;.20,1914.

2 SHEETS -SHBB'Y 2.

VICTCR KOONTZ, OF WAYNESBORO, PENNSYLVANIA.

NUTFACING MACHINE.

Specification of Letters Patent.

rat-@need 0010.20, 1914.

Application led October 3, 1910. Serial No. 585,130.

To all 'whom it may concern Be it known that I, Vio'noa R. KooN'rz, a citizen of the United States, residing at lVaynesboro, in the county of Franklin and State of Pennsylvania, have invented certain new and useful Improvementsin Nut-Facing Machines, of which the following is a specification.

My said invention consists in certain 1mprovements in the details of construction and arrangement of parts of machines for facing nuts, etc., whereby such a machine is provided which is very ethcient in operation and result, all as Will be hereinafter more fully described and claimed. v

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts, Figure l is a top or plan View of a nut facing machine of my improved construction, F ig. v2 a view partly in side elevation and partly in section as' seen when looking in the direction indicated by the arrow from the dotted line 2-2 in Fig. 1, Fig. 3 a view partly in end elevation and partly in cross section, and Figs. 4, 5, 6, 7, 8 and 9 detail views illustrating certain details of construction and modifications more clearly.

ln said drawings the portions marked A represent the bed or frame of the machine, B the cutter-head and C the Work-holding mandrel.

The frame of the machine is preferably a casting of suitable size and dimensions and provided with bearings for the various parts of the mechanism. The particular form is not material, although that. shown has been found suitable and is approved. No special features of novelty are embodied in said form, however, and a detailed description is therefore not necessary.

The cutter-head B is a suitable cutterhead for the purpose mounted on a spindle I) which is held in a suitable socket 1u the lop of head-block B', which is mounted to he transversely adjusted on a carriage, or head-block slide, B2. Said carriage B2 is mounted to slide longitudinally on ways A supported on one end of the bed A and may he adjusted toward and from the work by means .of a rack b2 on its underside with which a pinion 2 on a transverse shaft 3 en-V gages. Said shaft 3 is journaledin suitable bearings on frame A and provided with a crank or lever L, by which it may be turned.

The mandrel .C is screw-threaded at its outer end to receive the work lV and its inner end is tapered and mounted in a socket in the. front end of driving shaft It. Said mandrel is interchangeable with other mandrels of varying sizes so that one of appropriate size for the nuts to be dressed may be placed in position for the work as nuts o varying sizes are to be dressed.

Main driving shaft 4 is mounted to have a longitudinal movement m its bearings 1 and 11 and is formed with an enlarged front end` 1 to contain the socket for mandi-els C, as shown, and has a shoulder s at the rear of its front bearing and another shoulder s a short distance therefrom. Between said shoulders the reverse pulley 7 is mounted to normally run loosely. A sleeve 17 is mount ed on shaft t and extends-from shoulder s' to just through the rear bearing 11. A double-faced friction clutch-part 5 is mounted on sleeve 17 adjacent to pulley 7 which has a tapered internal friction face adapted to engage by frictional contact with one face of clutch-part 5. Said clutch-part 5 is vsecured to rotate with shaft 4 by-a'key 6 eX- tending through a perforation in its hub, a short longitudinal slot in sleeve 17 and a perforation 'in said shaft 4. The outer end of said key 6 is preferably screw-threaded.

and seats in a screw-threaded perforation in rim of part other side of clutch-part 5 and has an internal friction face adapted to surround and engage with the other tapered face of said part 5. Said shaft 4 is mounted to have a A gear 8 is mounted on the i' limited longitudinal movement in its bear- Said geul to mesh with another pinion 16 on sleeve 17 near the rear end of the machine. Said cam shaft is mounted in bearings in the outer ends of arms 40 and 41 extending transversely from the rear side of bearings 1 and 11 and on its rear end has a handle 42 by which it may be rocked to throw gears 13 and 15 into and4 out of engagement with gears 8 and 1G. The gear 8 is mounted to revolve loosely on sleeve 17 and a doublefaced driving pulley 18 ils mounted on said 1 f' sleeve 1T adjacent to said clutch-part Stowhich it may be secured bv a radial key 12 removably mounted i'n a rey way formed partly in each of said parts, for a purpose to )e presently described. Spacinor pins 19 extend slidably through the hub of clutch- )art 5 and hear against the adjacent faces o reverse pulley 7 and gear 8 to keep them a proper distance apart so as to allow only one to engage with part 5 at the same time, and hold them from sliding with the longitudinal movement of shaft 4. Pinion 16 is secured fast to pulley 18 toturn therewith.

A nut releasing yoke 20 is mounted on a transverse ivot 21 extending across the frontend o lthe frame. Adjustable jaws '22 are secured on its upper end by means of clamping nuts 23 on bolts 'which extend through slots in said jaws, whereby 'said yoke may be adapted for use with nuts of different sizes.

A lever 25 is mounted on a pivot 26 and extends longitudinally through the frame A, its rear end being curved upwardly and engaging in a vertical slot inthe r'ear end of shaft 4. while its forward end is curved upwardly and is formed with a cam-shaped top which is engaged by a roller 28 on the front end ofa lin c 27 carried by the carriage B2. Said link 27 also engages with pivoted yoke 2O forswinging it toward and from the work.

An oil pump 30 is 'provided for pum ing the oil to the work intheusual way. t is geared to the driving Amechanism in any approved manner, not shown.

A drip pan 35 is provided on the front end of the machine beneath 'the work to receive the oil drippings and also the cuttings from the work and a grate 36 is mounted above said drip pan on which thenished work may fall, said grate being inclined, as shown most clearly in Fig. 3, to guide said work to one side of vthe machine, while the cuttings and oil fall into the dri pan and run through pipe 37 into a c amber in the base of the machine. Said chamber is divided by a partition 38 which holds the chips and sediment on the front side thereof the oil flowing over to the other side of said artition from whence it may be pumped liack to the work.

In normal operation, pulleys 7 and 18 are driven from the power s aft (not shown) in reverse directions and cam shaft 14 is turned to throw gears 1 3 and 15 out of 'mesh with fears 8 and 16, a nut holding mandrel C eing placed in position, the shaft 4 is started in operation through driving pulley 18 (connected bv a. belt to the' ower shaft, not shown) an vgear 8 'and clpitch-part 5. The nutW is then run thereon. When it is in position on themandrelrtbe 4operator.xno'v'es carriage B2 toward the nutlthrou'gh the me- 'diiun of the lever L on shaft 3' and the pinion 2 thereon, which engages1 with the rack b2 on said carriage, as before described. As the carriage moves toward 'the work the cutters of the cutter-head B thereon come in contact with the face of the nut and dress it ofi' as desired. When the dressing operation has been completed the operator backs carriage B2, which draws the roller on the outer end of link 27 back over the eamshaped top end of lever 25, which depresses this end of said lever and also throws the nut holding yoke 2O forward so that the jaws will engage with the sides of the work, at the same time carrying clutchpart 5 out of engagement with gear 8 and into engagement with reverse pulley 7 (driven by a crossed belt from the power shaft) thus reversing the motion of shaft 4 which serves to throw the work W, heldfrom turning by the yoke 20, ofi the work holding mandrel, when another nut may be put in Cplace as before, and the operation repeats When greater power and less speed is desired key 12 is removed so that gear 8'will 'be free from pulley 18, cam shaft 14 rocked in its bearings to bring gears 13 and 15 into mesh with gears 8 and 16, when the drive of shaft 4 will be through gears 16. 15, 13 and 8 to clutch-part 5, keyed to said shaft, as will be readily understood.

In Figs. 4 and 5 I have shown a headstock carrying bolt-clam ing jaws 50 and 51 su'ported and 'operate by mechanism of or mary form, which head-stock may 'be substituted for the head-stock B when it is desired to dress the Vheads of 'bolts In Figs. 6, 7, 8 and 9'1 have illustrated a form of an equalizing collar 53 and cutter-head 54 adapted to be run onto the nut holding mandrels C. When it is desired to use the machine for dressing the outer face of bolt heads this 'head-stock may be substituted for head-stock B, the cutter-head shown in Fi 8 and 9 put on the mandrel, and with the bolts secured in said head-stock they may be readily dressed as desired, the'operation 'being practically the same as above described for dressing nuts. By havin these substitute parts the machine is readiigy convertible from one use to the other, as' will be readily `understood.

Having thus fully described my said invention, what I claim as new and desire to secu're by Letters Patent, is:

1. A facing machine comprising a carriage, a cutter-head mounted on said carriage, means for adjusting said carriage to and from the work, a work carrying shaft mounted to slide longitudinally, a clutch on said work carrying shaft comprising a mam part with two engaging faces. a drivmg element 'on a sleeve surrounding said ,main shaft adapted to engage with one of its faces, a 'reversing element on the. shaft adapted to engage with its other face, means for holding said driving element and said reversing element a predetermined distance apart, and means for sliding said shaft to throw said main clutch into engagement with either of -said driving and reversing elements, substantially as set forth.

2. A facing machine comprising a cutterhead, an adjustable carriage carrying said cutter-head, a work carrying shaft, means for driving said shaft in either direction, a pivoted work holding yoke, and a connection from' the cutter-head carriage to said work holding yoke for throwing it toward and from the work as said carriage is moved,

substantially as set forth.

. part and adapted to engage With-one of its clutch-faces, a pivoted lever engaging with said main shaft for sliding it longitudinally, and a connection between the cutter-'head carriage and said' pivoted Alever for operating it, substantially as set forth.

4. A facing machine comprising a frame, a sliding carriage a main shaft, a cutterhead mounted on' one of said parts, a work support mounted Aon the other, a reversing pulley mounted loosely on the shaft, a sleeve surrounding said shaft to one side of said pulley, a clutch-part with clutch faces mounted on saidsleeve and keyed to said shaft, said shaft being mounted to have a limited longitudinal movement, a driving pulley on said sleeve alongside said clutchpart and formed with a face to engage with one of the clutch-faces thereof, and means for sliding said'shaft longitudinally to couple one or the other of said pulleys to said clutch-part, substantially as set forth.

5. A facing machine comprising a frame, a carriage, a. main shaft having longitudinal movement, a euttenhead' mounted on one of said two elements rst mentioned, a work support mounted on the other of said two elements, a pulley mounted loosely on the shaft and formed with a clutch-face, a sleeve mounted on said shaft to one side of said pulley, a double-faced clutch-part keyed through said sleeve and shaft and formed with a clutch-face adapted to engage with the center face of the pulley, a spring interposed between a collar on said shaft and the end of Said sleeve for normally holding said shaft and sleeve at the extreme of one limit of movement, a lever for sliding said my hand and seal at Waynesboro, Pennsylvania this th day of September, A. D. nineteen hundred and ten.

VICTOR R. KOONTZ. [L.s.] Witnesses: A

BENJ. Dnauoonrr, JOHN A. Perma. 

